Catheter



FIG. 1 is a top, front left side perspective view of a catheter showing my new design, the catheter tube being shown broken in the center to indicate indeterminate length;

FIG. 2 is a front elevational view thereof, the rear elevational view being identical thereto;

FIG. 3 is a left side elevational view thereof, the right side elevational view being identical thereto;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a catheter, as shown and described. 